Results 81 to 90 of about 66,864 (291)

A Size-Dependent Non-Fourier Heat Conduction Model for Magneto-Thermoelastic Vibration Response of Nanosystems [PDF]

open access: yesJournal of Applied and Computational Mechanics
This study proposes a new fractional model to show how heat transfers through nanomaterials by considering the thermoelastic vibration of one-dimensional nanostructures via nonlocal elasticity theory.
Ahmed Abouelregal   +2 more
doaj   +1 more source

Nonequilibrium phonon mean free paths in anharmonic chains

open access: yes, 2015
Harnessing the power of low-dimensional materials in thermal applications calls for a solid understanding of the anomalous thermal properties of such systems. We analyze thermal conduction in one-dimensional systems by determining the frequency-dependent
Oksanen, J.   +3 more
core   +4 more sources

Fast‐Responding O2 Gas Sensor Based on Luminescent Europium Metal‐Organic Frameworks (MOF‐76)

open access: yesAdvanced Functional Materials, EarlyView.
Luminescent MOF‐76 materials based on Eu(III) and mixed Eu(III)/Y(III) show rapid and reversible changes in emission intensity in response to O2 with very short response times. The effect is based on triplet quenching of the linker ligands that act as photosensitizers. Average emission lifetimes of a few milliseconds turn out to be mostly unaffected by
Zhenyu Zhao   +5 more
wiley   +1 more source

Fractional thermal diffusion and the heat equation

open access: yesOpen Physics, 2015
Fractional calculus is the branch of mathematical analysis that deals with operators interpreted as derivatives and integrals of non-integer order. This mathematical representation is used in the description of non-local behaviors and anomalous complex ...
Gómez Francisco   +4 more
doaj   +1 more source

Thermal conduction in molecular chains: Non-Markovian effects

open access: yes, 2008
We study the effect of non-Markovian reservoirs on the heat conduction properties of short to intermediate size molecular chains. Using classical molecular dynamics simulations, we show that the distance dependence of the heat current is determined not ...
Ashcroft N. W., Dvira Segal
core   +1 more source

Electroactive Metal–Organic Frameworks for Electrocatalysis

open access: yesAdvanced Functional Materials, EarlyView.
Electrocatalysis is crucial in sustainable energy conversion as it enables efficient chemical transformations. The review discusses how metal–organic frameworks can revolutionize this field by offering tailorable structures and active site tunability, enabling efficient and selective electrocatalytic processes.
Irena Senkovska   +7 more
wiley   +1 more source

The BEM application for numerical solution of non-steady and nonlinear thermal diffusion problems

open access: yesComputer Assisted Methods in Engineering and Science, 2023
Application of the boundary element method for approximate solution of non-steady and nonlinear thermal diffusion problems is not possible in a direct way. The fundamental solutions (being a basis of the BEM algorithm) are known only for linear problems-
Ewa Majchrzak, Bohdan Mochnacki
doaj  

Thermomass Theory in the Framework of GENERIC

open access: yesEntropy, 2020
Thermomass theory was developed to deal with the non-Fourier heat conduction phenomena involving the influence of heat inertia. However, its structure, derived from an analogy to fluid mechanics, requires further mathematical verification. In this paper,
Ben-Dian Nie   +3 more
doaj   +1 more source

Unifying first principle theoretical predictions and experimental measurements of size effects on thermal transport in SiGe alloys

open access: yes, 2017
In this work, we demonstrate the correspondence between first principle calculations and experimental measurements of size effects on thermal transport in SiGe alloys. Transient thermal grating (TTG) is used to measure the effective thermal conductivity.
Chen, Gang   +8 more
core   +1 more source

On‐Surface Indigo‐Based Bimolecular Coordination Networks with Programmable Regular or Vitreous Structure

open access: yesAdvanced Functional Materials, EarlyView.
A previously unreported coordination motif stabilising single Fe atoms by indigo chelation and pyridyl coordination on Au(111) has been revealed. By using planar tritopic pyridyl linkers (TPyB), extended 2D porous networks of indigo3(TPyB)2Fe6 form. These networks can be crystalline or vitreous and offer an environment where individual coordination ...
Hongxiang Xu   +9 more
wiley   +1 more source

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